Abstract: A display device includes a display panel, a scan driver, and a data driver. The display panel includes a plurality of pixels connected to the scan lines and data lines. The scan driver supplies a scan signal via the scan lines. The data driver supplies data signals via the data lines. At least one scan line of the scan lines is connected to pixels in a plurality of lines, and the pixels connected to the at least one scan line is connected to different data lines. The display panel may be a non-rectangular display panel.

Abstract: The invention provides an AMOLED pixel driver circuit and pixel driving method, by using a pixel driver circuit of 5T1C structure to effectively compensate threshold voltage of driving TFT in each pixel through a source-following approach to compensate the threshold voltage of the driving TFT so that the current flowing through the OLED is independent of the threshold voltage of the first TFT, the threshold voltage of the OLED and the negative voltage of the power source to ensure even light-emission result of OLED and improve display result.

Abstract: An apparatus includes a display panel. In one example, the display panel includes an array of subpixels in a first, a second, and a third colors. Subpixels in the first, second, and third colors are alternatively arranged in every three adjacent rows of the array of subpixels. Every two adjacent rows of the array of subpixels are staggered with each other. A first subpixel in one of the first, second, and third colors and a second subpixel in a same color as the first subpixel are offset by 3 units in the horizontal axis and 4 units in the vertical axis. The first and second subpixels have a minimum distance among subpixels in the same color.

Abstract: A display device includes: a pixel array unit with pixel circuits disposed in matrix form, the pixel circuit including a driving transistor, an electro-optic element, a storage capacitor, and a sampling transistor, with the electro-optic element emitting light by generating a driving current based on information stored in the storage capacitor at the driving transistor to be applied to the electro-optic element; and a control unit, of which the output stage includes a buffer transistor, to output a pulse signal for driving the pixel array unit from the buffer transistor; wherein the pixel array unit and the control unit are formed with long laser beam irradiation to be scanned in the vertical direction or horizontal direction; and wherein with the control unit, the size of the buffer transistor is equal to or greater than the pixel pitch in the scanning direction of the laser beam.

Abstract: Provided is a novel display device. In a 2T2C display device, a voltage of a current supply line in a data voltage writing period is lower than a voltage thereof in an emission period. For example, the voltage of the current supply line in the data voltage writing period is equal to a voltage on the cathode side of a light-emitting element. With such a structure, the potential rise on the anode side of the light-emitting element can be suppressed to avoid undesired emission in the data voltage writing period.

Abstract: A display device includes a display panel, a controller, a power supplier, and an initialization voltage generator. The controller generates a power control signal based on an input image. The power supplier generates a variable driving voltage that is changed based on the power control signal. The initialization voltage generator changes an initialization voltage to initialize the pixels based on the variable driving voltage.

Abstract: In order to reduce non-uniform luminance and/or chrominance, a display panel can determine, on a pixel-by-pixel basis in at least a row of pixels, a correction for voltage drops in the display panel. The voltage drop can be estimated based on a state of pixels in the display panel corresponding to at least a portion of a current frame of image data and at least a portion of a previous frame of image data. Moreover, based on the correction, the display plane can modify on the pixel-by-pixel basis in at least the row: a supply voltage applied to the display panel; a digital representation of the image data in the current frame that correspond to the pixels; and pixel drive signals corresponding to the image data in the current frame. Furthermore, the correction may be based on a predefined calibration constant and/or may be dynamically calculated.

Abstract: Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display information. To increase programming time, the pixel circuits may be pre-charged or a biasing current may be applied to charge and/or discharge a data line and/or the driving device. Aspects of the present disclosure allow for the biasing current to drain partially through the storage device to allow the portion of the biasing current applied to the driving device to remain small while the data line discharges. Furthermore, the present disclosure provides display architectures and operation schemes for display arranged in segments each including a plurality of pixel circuits.

Abstract: An electroluminescent (EL) display apparatus and corresponding method of control are provided. A display screen includes gate signal lines which are arranged to intersect source signal lines. A pixel provided with an EL device corresponds to each intersection of the gate signal lines and the source signal lines. A driving transistor is provided for each pixel to supply a current to the EL device. A first switch transistor is provided for each pixel on a current path through which the current is supplied to the EL device. A gate driver circuit is connected to the gate signal lines. The gate driver circuit is configured to turn the first switch transistor on and off to simultaneously generate band-shaped non-display regions and band-shaped display regions on the display screen and to move the non-display regions and the display regions relative to the display screen.

Abstract: Provided are a display device and a method of controlling a power integrated circuit (PIC) thereof. The display device in one embodiment includes a controller for generating a switch pulse signal synchronized with an input image and initializing the switch pulse signal during a frame blank period in which the input image is not present; and a power integrated circuit (PIC) driven according to the switch pulse signal to generate power of a display panel. A duty ratio of the switch pulse signal is aligned to be greater than 0 and equal to or less than 3% during an alignment period set within a frame blank period, compared with a normal period. Thus, a change in the duty ratio of the switch pulse signal within the frame blank period is controlled to be minimized to prevent a degradation of image quality due to the variation of power.

Abstract: The present disclosure relates to display technology, and provides an inverter, a gate driving circuit and a display apparatus, capable of solving the problem that it is difficult to apply Scan Power technology in the display apparatus since a power signal outputted from the inverter has a small current. The inverter comprises: a current amplification module configured to amplify a current of the output terminal of the inverter based on a signal at a first clock signal terminal, a signal at a second clock signal terminal, a signal at a third clock signal terminal, a signal at a fourth clock signal terminal, a signal at a first input signal terminal, and a signal at a second input signal terminal, and to control the output terminal of the inverter to output a high level signal; and a pull-down module configured to control the output terminal of the inverter to output a low level signal. The inverter according to the present disclosure may be applied in a display apparatus employing the Scan Power technology.

Abstract: The present invention discloses a shift register unit and method for driving it, and a gate driving circuit. The shift register unit comprises an output module, an unset module and an unset control module; wherein a control terminal of the output module, an output terminal of the unset module are connected to a first node; an output terminal of the unset control module is connected to a control terminal of the unset module; the unset module is configured to be turned off under the control of a control signal accessed to a control terminal of the unset control module so as to prevent the unset module from unsetting the first node, such that the output module outputs a shift signal having multiple pulses during the period in which the unset module is turned off.

Abstract: A timing controller includes an input signal processor that receives a data enable signal and a frame frequency information signal, generates one of a first internal data enable signal having a first frame frequency and a second internal data enable signal having a second frame frequency, the first and second frame frequencies being selected based on the frame frequency information signal. A gate control signal output unit generates and outputs a first gate control signal based on the first internal data enable signal or a second gate control signal based on the second internal data enable signal. A data control signal output unit generates and outputs a first data control signal based on the first internal data enable signal or a second data control signal based on the second internal data enable signal. The pulse widths of the first and second internal data enable signals are the same.

Abstract: A display device includes: a pixel unit including pixels, each including an OLED; a scan driver configured to supply scan signals to scan lines connected to the pixels; a data driver configured to supply data signals to data lines connected to the pixels; a control line driver configured to supply control signals to control lines connected to the pixels; a sensing unit configured to receive sensing voltages from the data lines during a sensing period; a switching unit configured to selectively connect the data lines to the data driver and to the sensing unit, and to perform current sensing of the OLEDs of the pixels to which the control signals are supplied from among the plurality of pixels; and a timing controller configured to control the control line driver to supply the control signals to one or more of the control lines according to externally input first data.

Abstract: A system may produce images including narrow-bandwidth colors. One or more sets of the narrow-bandwidth colors may be selected to be interpreted as substantially a same color by a user. The system may include a light source configured to produce the narrow-bandwidth colors, and/or narrow-passband filters may create narrow-bandwidth colors from light emitted by broad-spectrum light sources or color sources. Spatial and/or time multiplexing may be used to create separate narrow-bandwidth colors interpreted as substantially a same color by the user. The light source and/or the narrow-passband filter elements may be adjustable and may alternate between emission of two or more narrow-bandwidth colors. A viewing device may include filters configured to selectively filter the narrow-bandwidth colors. The user may filter the narrow-bandwidth colors to separate a stereoscopic image pair, to view an image specific to a user, to view desired content obfuscated by an obfuscating image, and/or the like.

Abstract: A liquid crystal television increases or decreases a gradation value when the gradation value of an image signal to be displayed on a liquid crystal panel is within a prescribed range. Further, the liquid crystal television decreases or increases the luminance depending to the gradation value of the image signal based on the increase or decrease in the gradation value. The liquid crystal television applies a voltage depending on the gradation value after the change to the liquid crystal panel, such that a transmittance in the liquid crystal panel is changed (increased or decreased). Further, the liquid crystal television controls each light source to emit light with the luminance after the change, such that the luminance of the light radiated to the liquid crystal panel from the light source is changed (decreased or increased).

Abstract: The invention provides a luminance adjustment method and apparatus for RGBW LCD, which uses first and second EOTFs to generate a grayscale luminance lookup table for RGBW LCD, and makes the grayscale-luminance relation in lookup table corresponding to the first EOTF within the grayscale interval between 0 and grayscale threshold; the grayscale-luminance relation in lookup table corresponding to the second EOTF within the grayscale interval between grayscale threshold and 255; the curve slope of the second EOTF greater than the curve slope of the first EOTF within the interval between second luminance threshold and maximum luminance value. By adopting different EOTFs for low and high grayscale intervals, the method considers the poor dark state characteristics of LCD and characteristics of RGBW LCD having higher maximum luminance, and improves the display capability of RGBW LCD in details of high grayscale images.

Abstract: A display driving circuit includes a storage module, a switch module and a current detection module. The storage module is configured to store a control program of inversion driving modes for liquid crystal and output to the switch module an inversion drive signal corresponding to different inversion driving modes for liquid crystal. The current detection module is configured to detect a change in current and output a current detection signal corresponding to the switch module based on a magnitude of the detected current value. The switch module is configured to determine a desired inversion driving mode for liquid crystal based on the current detection signal and output an inversion driving signal corresponding to the desired inversion driving mode for liquid crystal.

Abstract: A display driver includes a driving voltage generation part that generates a voltage as a pixel driving voltage by inverting a polarity of a voltage representing a luminance level of each pixel based on a video signal according to a polarity inversion signal received via a transmission line, the polarity inversion signal alternately indicating either one of positive and negative polarities, and a polarity inversion abnormality detection part that generates an abnormality detection signal indicating an abnormality of the transmission line when the polarity inversion signal indicates only one constant polarity for a period of N frames (N is an integer greater than or equal to 2) of the video signal.

Abstract: A method for adjusting the gain of a plurality of pixels across a display includes determining grid point gain adjustments for a plurality of grid points corresponding to coordinates across the display. The corresponding coordinates have a non-uniform spacing across the display. The method also includes determining uniformity gain adjustments for the plurality of pixels via interpolation with the grid point gain adjustments. The method also includes multiplying the uniformity gain adjustment for each pixel of the plurality of pixels by an input signal to the respective pixel. The drive strength supplied to the respective pixel is based at least in part on the input signal, and the drive strength supplied to each pixel is configured to control the light emitted from the respective pixel.

Abstract: Aspects of the subject technology relate to electronic devices with displays. A display may include an array of display pixels and control circuitry for operating the display. In some scenarios, interference signals from other components of the electronic device or additional external devices can couple to the control circuitry for the display and cause distortions in displayed data. Display frames may be displayed by an electronic device display with a varying phase. The varying phase display frames may each include a distortion pattern that also varies from frame to frame due to the varying phase. The varying distortion patterns may average out or visibly cancel when viewed by a user such that no visible artifact of the interference signal is seen by the user. The varying phase can be actively tuned to the interference signal if desired.

Abstract: The embodiments of the present disclosure provide a shift register unit, a method for driving the shift register unit, a gate driving circuit and a display apparatus. The shift register unit comprises a first input module, a first output module, a first reset module, a first storage module and a second reset module. The first input module is configured to output a first pull-up signal to the first output module based on a first input signal. The first output module is configured to output an output signal based on the first pull-up signal and a first clock signal. The first storage module is configured to store the first pull-up signal. The first reset module is configured to reset the first storage module based on a first reset signal. The second reset module is configured to reset the output from the first output module based on a second reset signal.

Abstract: A display device includes pixel electrodes formed in an image display area of a substrate, a common electrode formed in the image display area, inside signal lines formed inside the image display area, and electrically connected to the pixel electrodes, outside signal lines formed outside the image display area, and electrically connected to the inside signal lines, and a common line formed inside and outside the image display area, and electrically connected to the common electrode. An image is displayed under a control of a light using an electric field developed between the pixel electrodes and the common electrode. A coupling capacitance is formed between the inside signal lines and the common electrode. The outside signal lines each include a first portion, and a second portion higher in electric resistance than the first portion and the inside signal lines.

Abstract: A gate driving circuit includes: a pull-up controller applying a carry signal of one of previous stages to a first node in response to the carry signal of the one of the previous stages; a pull-up part outputting a clock signal as an N-th gate output signal; a carry part outputting the clock signal as an N-th carry signal; a first pull-down part pulling down the signal at the first node to a second off voltage; a second pull-down part pulling down the N-th gate output signal to a first off voltage; an inverting part generating an inverting signal based on the clock signal and the second off voltage to output the inverting signal to an inverting node; and a reset part outputting a reset signal to the inverting node.

Abstract: The present application discloses a display panel having a plurality of gate lines and a gate driving circuit for driving the plurality of gate lines, the gate driving circuit including a plurality of first cascaded shift register units and a plurality of second cascaded shift register units for applying gate scanning signals to gate lines connected thereto.

Abstract: Detecting when the on-board power supply is powered on or off by an auto activity detection circuit by determining if the reference clock signal (TCLK) is toggling, and, if the reference clock signal is toggling, then charging a capacitor to a high voltage in the auto activity detection circuit based on the toggling reference clock signal, and outputting an on-board power supply activity signal based upon the high voltage by the auto activity detection circuit indicative of whether or not the on-board power supply is active.

Abstract: A processor performs vertex coloring for a graph based at least in part on the degree of each vertex of the graph and based at least in part with another coloring approach, such as comparison of random values assigned to the vertices. For each vertex in the graph, a processor determines whether the degree of the vertex is a local maximum; that is, whether the degree of the vertex is greater than the degree of each of its connected vertices. Each vertex having a local-maximum degree is assigned a specified or randomly selected color, and is then omitted from future iterations of the coloring process. After a stop criterion is met, the processor assigns random values to the remaining uncolored vertices and assigns colors based on comparisons of the random values.

Abstract: A transmission apparatus includes a data transmission unit that transmits image data with a wide color gamut to an external apparatus over a transmission path; and an information transmission unit that transmits additional information on the image data with the wide color gamut that is transmitted by the data transmission unit and information on a transmission method for the additional information, to the external apparatus over the transmission path.

Abstract: The present invention relates to a system and a method for device pairing which can pair a plurality of terminals using a brightness value change pattern. The system for device pairing according to an embodiment of the present invention comprises: an apparatus including a display; n terminals; and a server for connecting the apparatus including the display with the n terminals. The server assigns an ID to the apparatus including the display in accordance with an access request of the apparatus. The apparatus including the display calculates a brightness value change pattern corresponding to the ID, and outputs the pattern on the display. The n terminals can identify the ID after detecting the pattern outputted on the display using a proximity sensor and an illuminance sensor, transmit the ID to the server, and request an access.

Abstract: A head mounted display (HMD) device including a communication processor configured to communicate with a mobile terminal; a display configured to display a content received from the mobile terminal; and a controller configured to in response to an event generated on the mobile terminal, selectively display an object on the display corresponding to the event generated on the mobile terminal, based on a type of the displayed content.

Abstract: Improving the visibility of the dark portion and to prevent the degradation of image quality caused by excessive correction. A reflectance calculation unit is storing a parameter RGain for adjusting the amplitude of a reflectance component R. An illumination light correction unit generates a corrected illumination light component L1 from an illumination light component L and a formula L1=(log(LAmp*L+1))/(log(LAmp+1)). An image resynthesis unit obtains a corrected illumination light component L? from L?=LGain*L1+(1?LGain)*L. The image resynthesis unit also calculates a corrected image Iout from the corrected illumination light component L? and the corrected reflectance R?, as well as from a formula Iout=exp(log L?+RGain(log I?log L)). The value of the corrected illumination light component (L?) is determined based on the ratio (LGain) at which the output value of the correction function (L1) and the original illumination light component (L) are combined.

Abstract: By converting a first color space to a second color space, using a two-dimensional lookup table in said second color space, and converting from said second color space to said first color space, it may be possible to use one or more two-dimensional lookup tables (LUTs) to do a task conventionally handled by three-dimensional lookup tables. This may reduce storage requirements and memory bandwidth requirements in some embodiments. In general a color pixel with N color components can be processed with n number of M dimensional LUT where M<N and n is some chosen positive integer number.

Abstract: An image processing device includes a first extension ratio calculation section adapted to calculate a first extension ratio based on a grayscale value included in first image data, a second extension ratio calculation section adapted to calculate a second extension ratio based on a grayscale value included in second image data, a first extension section adapted to correct the grayscale value included in the first image data based on the first extension ratio, a second extension section adapted to correct the grayscale value included in the second image data based on selected one of the first extension ratio and the second extension ratio, and a combination section adapted to generate composite image data obtained by combining the first image data having the grayscale value corrected by the first extension section and the second image data having the grayscale value corrected by the second extension section with each other.

Abstract: A display device, a driving method thereof, a manufacturing method thereof and an anti-peeping display system are provided. The display device includes an interference display module and a first display panel disposed in a light-emitting direction of the interference display module. The light emitted by the interference display module is polarized light. In the display device, the light of an interference image generated by the interference display module will be superimposed to light of a display image generated by the first display panel, so that users can only view an unordered image and cannot view a normal image when viewing the display device under glasses-free state. The light emitted by the interference display module is polarized light, so that the normal display image can be obtained by filtering the polarized light with polarization spectacles which can filter such polarized light.

Abstract: A display device that displays a character string on a display frame in a default display state includes: a receiving unit configured to receive designation of a first display magnification; a magnification changing unit configured to perform a magnification change process to change display magnifications by setting a display magnification for the display frame at the first display magnification and setting a display magnification for the character string at a second display magnification lower than the first display magnification, when the first display magnification is higher than a display magnification in the default display state; and a display control unit configured to perform control so that only characters falling within the display frame having the display magnification changed to the first display magnification are displayed, the only characters being of the character string having the display magnification changed to the second display magnification.

Abstract: Implementations relate to prioritized display of visual content in computer presentations. In some implementations, a computer-executed method includes obtaining first visual content and second visual content associated with the first visual content, where the first and second visual content include a plurality of pixels. The method provides a display of a computer presentation by a display device, where the first visual content is displayed in a presentation area of the computer presentation. The method determines that a first presentation priority of at least a portion of the first visual content is reduced based on a determination that less than a threshold amount of the at least a portion of the first visual content has changed. In response to determining that the first presentation priority is reduced, the method improves a visibility of a display of the second visual content in the computer presentation.

Abstract: An image processing method and image processing device for performing the same are disclosed. In one aspect, the image processing method includes transmitting a content image having a visual condition to a display unit. The method also includes periodically changing the visual condition from a first visual condition to a second visual condition according to a modulation timing such that the content image to be displayed after the modulation timing has the second visual condition different from the first visual condition before commencement of the modulation timing.

Abstract: A method of scheduling and performing computations for generating an interactive computer-generated animation on behalf of a client device to achieve a desired quality of service includes generating a computational configuration of computations that, when performed, produce the computer-generated animation with the desired quality of service. The configuration includes an identification of a first computation that outputs first data, a first start time for the first computation, and a first end time, where the first computation is to end before the first end time. The configuration also includes an identification of a second computation that depends on the first data, and a second start time for the second computation. The first computation is performed in response to an occurrence of the first start time and the second computation is performed in response to an occurrence of the second start time.

Abstract: In one embodiment, dividing a set of texts into one or more text blocks, each text block including a portion of the set of texts; rendering each text block to obtain one or more rendered text blocks; determining a placement instruction for each rendered text block, the placement instruction indicating a position of the rendered text block when it is displayed; and sending the one or more rendered text blocks and their respectively associated placement instructions to an electronic device for displaying on the electronic device.

Abstract: A system or a method may be provided that may detect a movement or activity of a user via the user's mobile and/or wearable devices. The system may adjust the display interface based on the user's detected movement or activity. When a user is very active (biking or jogging), the user may have very limited amount of time or attention to interact with a display interface. The movement or activity of the user may be detected by a motion detection device installed on the mobile device or on the wearable device. When the user is active, the display interface may adjust to enlarge the information to make it easier for the user to view, read, or interact with. The system may also select and display important information, without other peripheral information (less important information) when the user is active.

Abstract: According to a drawing control device according to the present invention, graphics capable of implementing reality is displayed on a surface-shaped drawing device in a vehicle. A degree of importance is provided for each of components to be displayed (a drawing object, a drawing component and a decoration component), and the degree of importance is changed in accordance with the state of the vehicle. The drawing arrangement order is changed in accordance with the degree of importance to draw and display each of the components. As a result, the drawing control device can prevent any decoration component for pursuing reality from hiding information necessary to the driver from view.

Abstract: An electronic device includes a display unit configured to display a plurality images, an eye tracking sensor configured to detect a eye-focused area on the display unit, a reflective layer, a reflective control layer configured to change a regional reflectivity of the reflective layer, and a processor configured to receive the eye-focused area on the display unit from the eye tracking sensor, and determine a focus image within the eye-focused area and an unfocused image out of the eye-focused area, and cause the reflective control layer to reflect the unfocused image. In some embodiment, the processor is configured to cause the reflective control layer not to reflect the focused image.

Abstract: A stroke adjustment device for a keyboard instrument, which can finely adjust key depression stroke and hammer stroke to obtain sufficient controllability of weak tones during musical performance and make the dynamic range even wider. This device includes a lifting mechanism for lifting up and down a keyboard pillow on which rear ends of keys are placed, an operation mechanism manually operated for driving the lifting mechanism, and a driving force transmission mechanism for transmitting a driving force generated by operation of the operation mechanism to the lifting mechanism. The lifting mechanism has a rotating shaft body rotatably provided below the keyboard pillow, vertically movable rack parts in mesh with gear portions that rotate in unison with the rotating shaft, and a lifting part extending over the rack parts and vertically moving in unison with the rack parts to lift up and down the keyboard pillow.

Abstract: Systems for raising pads on musical instruments to enable drying of pads and increase air flow around the pad and a body of the musical instrument. A vent spanner device, including a positioning feature and a retention feature, is placed between a pad and its corresponding vent to create an air gap. A pad prop is placed against a key mechanism or between the key mechanism and/or the body to raise a pad from sealing its corresponding vent. A linkage feature connects one or more vent spanners, pad props, end pieces, key mechanisms, or the body, and provides storage.

Abstract: Apparatus, methods, and systems that operate to perform machine-control of a device based on machine-detected transitions are disclosed.

Abstract: A signal processing method includes a first specifying step and a first modifying step. In the first specifying step, a first modification object section for a singing voice of a music is specified based on a temporal change of pitch of singing voice data representing the singing voice or a temporal change of pitch in a score of the music. In the first modifying step, a modifying process is performed to the singing voice data. The modifying process modifies at least one of the temporal change of pitch and the temporal change of volume of the singing voice in the first modification object section which is specified by the first specifying step.

Abstract: To provide an electronic percussion that ensures reproducing further faithful musical sound relative to a hitting operation by a player. An electronic percussion 100 includes a thin plate-shaped head 101 at an opening formed into a shape of a cylinder with a closed bottom and respective pressure sensor 106 and signal processing device 110 on a bottom 102a. A surface of the head 101 constitutes a struck surface 101a. The head 101 includes a vibration sensor 103 on the back surface. The vibration sensor 103 includes a pressure sensor pressing body 105 on the pressure sensor 106 side. The pressure sensor pressing body 105 is formed to have a tapered shape whose outer diameter gradually thins from the vibration sensor 103 side to the pressure sensor 106 side. The signal processing device 110 outputs a musical sound signal representing a musical sound using respective detection signals of the vibration sensor 103 and the pressure sensor 106.

Abstract: A pneumatic sounder and a control system thereof are disclosed. The pneumatic sounder comprises double magnets and a double-moving coil assembly. The double magnets comprise a first magnet and a second magnet, and the double-moving coil assembly comprises a first moving coil and a second moving coil. The first moving coil is disposed in a magnetic field of the first magnet, and the second moving coil is disposed in a magnetic field of the second magnet. The first moving coil and the second moving coil are connected to an electrical signal control system respectively, and a control system for the pneumatic sounder is also provided. The sounder greatly enhances adjustment efficiency of a cutting seam, reduces energy consumption for driving moving coils, guarantees services lives of the moving coils, and increases reliability of a system.

Abstract: Earpieces and methods for acute sound detection and reproduction are provided. A method can include measuring an external ambient sound level (xASL), monitoring a change in the xASL for detecting an acute sound, estimating a proximity of the acute sound, and upon detecting the acute sound and it's proximity, reproducing the acute sound within an ear canal, where the ear canal is at least partially occluded by an earpiece. Other embodiments are disclosed.

Abstract: An apparatus includes a sensor module configured for receiving sensed information indicative of a sensed signal. The sensed signal includes a source signal component and a source noise component. The apparatus also includes a reference module configured for reference information indicative of a reference signal. The reference signal also includes a reference noise component. The apparatus also includes a filter module configured as a fixed lag Kalman smoother. The filter module is configured for adaptively filtering the reference signal to generate an estimate of the source noise component. The apparatus also includes a processing module configured for calculating an output signal based on the sensed signal and the estimate of the source noise component. The apparatus also includes an interface module configured for transmitting an indication of the output signal. The filter module is further configured for, based on the output signal, tuning the Kalman smoother.